I know it’s probably too late for this suggestion, but I would’ve heated up that triple MCPCB to remove the white solder mask, sanded it down a little, then you’ll have a blank aluminum plate.
Good luck with the build anyway! I always look forward to your builds
Looking forward to the for sale thread. :D I don't think you will be melting the TIR optics anytime soon, PILOTPTKs module also has them resting on copper and the body of my light got uncomfortably hot and the TIR optics were fine.
I would solder the braid on the next loop down on the spring (at the point the top loop ends). You should get a lot more contact area and lower resistance that way… the way it is soldered now you probably only get contact at the bump in the braid.
Beautiful work with the 219s OL. I still use my nichia 2AA maglite everyday because of the tint. Whoever gets this will be one lucky duck!
But i think lumens will be around 800 because these are 219s we are talking about, afterall.